551523401 has 16 divisors (see below), whose sum is σ = 686060928. Its totient is φ = 435590400.

The previous prime is 551523397. The next prime is 551523403. The reversal of 551523401 is 104325155.

It is a cyclic number.

It is not a de Polignac number, because 551523401 - 2² = 551523397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551523403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111005 + ... + 115866.

It is an arithmetic number, because the mean of its divisors is an integer number (42878808).

Almost surely, 2^551523401 is an apocalyptic number.

It is an amenable number.

551523401 is a deficient number, since it is larger than the sum of its proper divisors (134537527).

551523401 is a wasteful number, since it uses less digits than its factorization.

551523401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226912.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 551523401 is about 23484.5353584013. The cubic root of 551523401 is about 820.0770307369.

Adding to 551523401 its reverse (104325155), we get a palindrome (655848556).

The spelling of 551523401 in words is "five hundred fifty-one million, five hundred twenty-three thousand, four hundred one".